Englishfor English speakers
dam
Noun
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A dam is like a wall used to hold back water. Usually, this is to block a river.
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A dam is a barrier like that used to hold back water, such as a dental dam.
dam
Verb
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If you dam a river you block it with a dam.
back
Preposition
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Toward the rear.
He went back behind the stands.
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To a place again.
I didn't like it, so I sent it back.
He went back to the same house.
They came back again.
back
Noun
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The back is the rear part of something; it is the part in the other direction from the front.
I went to the back of the house.
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The back is the rear part of the human body.
He had a scar on his back.
back
Verb
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If you back something, you support it.
The Republicans backed the bill.
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If you back up, you move backward.
He put the car in gear and backed right into the garage door.